linux-kernel - Re: [PATCH] arm: Don't use memblock limit for the lowmem bound

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <20150514101447.GW2067@n2100.arm.linux.org.uk>
Date:	Thu, 14 May 2015 11:14:47 +0100
From:	Russell King - ARM Linux <linux@....linux.org.uk>
To:	Laura Abbott <labbott@...oraproject.org>
Cc:	Mark Rutland <mark.rutland@....com>, Arnd Bergmann <arnd@...db.de>,
	Nicolas Pitre <nico@...aro.org>,
	Stefan Agner <stefan@...er.ch>,
	Laura Abbott <labbott@...hat.com>,
	Catalin Marinas <catalin.marinas@....com>,
	Will Deacon <will.deacon@....com>,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	Hans de Goede <hdegoede@...hat.com>
Subject: Re: [PATCH] arm: Don't use memblock limit for the lowmem bound

On Mon, May 11, 2015 at 07:53:41PM -0700, Laura Abbott wrote:
> From: Laura Abbott <labbott@...hat.com>
> 
> The memblock limit is currently used in find_limits
> to find the bounds for ZONE_NORMAL. The memblock
> limit may need to be rounded down a PMD size to ensure
> allocations are fully mapped though. This has the side
> effect of reducing the amount of memory in ZONE_NORMAL.
> Since we generally want to optimize for more lowmem, fix
> this by using arm_lowmem_limit to calculate the bounds.
> This what is used for actually mapping lowmem anyway.
> 
> Before:
> # cat /proc/zoneinfo | grep managed
>         managed  62920
> 
> After:
> # cat /proc/zoneinfo | grep managed
>         managed  63336
> 
> 
> 
> Signed-off-by: Laura Abbott <labbott@...hat.com>

Ok.  -> patch system please.

-- 
FTTC broadband for 0.8mile line: currently at 10.5Mbps down 400kbps up
according to speedtest.net.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/